Hydrogenation of CO2 to alcohols is of great importance, especially when producing higher alcohols. In this work, we synthesized heterogeneous PtRu/Fe2O3, in which the Pt and Ru bimetallic catalysts were supported on Fe2O3. The catalyst was used to catalyse CO2 hydrogenation to alcohols. It was demonstrated that the activity and selectivity could be tuned by the bimetallic composition, and the catalyst with a Pt to Ru molar ratio of 1:2 (Pt1Ru2/Fe2O3) had high activity and selectivity at 200°C, which is very low for heterogeneous hydrogenation of CO2 to produce higher alcohols. The conversion and the selectivity increased with increasing pressures of CO2 and/or H2. The catalyst could be reused at least five times without any obvious change in activity or selectivity.
One contribution of 12 to a discussion meeting issue ‘Supercritical fluids: green solvents for green chemistry?’
- Accepted July 7, 2015.
- © 2015 The Author(s)